Across
- 1. specialized area of membrane of the axon terminal that faces the plasma membrane of the neuron or muscle fiber with which the axon terminal establishes a synaptic junction.
- 3. sensory neurons that carry nerve impulses from sensory stimuli towards the central nervous system and brain
- 5. appendage designed to receive communications from other cells
- 6. body's chemical messengers. Molecules used by the nervous system to transmit messages between neurons, or from neurons to muscles.
- 11. aka: voluntary nervous system. Part of the peripheral nervous system. Consists of neurons that are associated with skeletal or striated muscle fibers and influence voluntary movements.
- 12. sensory receptor located in the subcutaneous tissues and is capable of detecting motion and position of the body through a stimulus produced within the body.
- 14. also called glial cell or glia, any of several types of cell that function primarily to support neurons.
- 16. aka neurilemma cell. Any of the cells in the peripheral nervous system that produce the myelin sheath around neuronal axons.
- 18. aka synaptic bouton and terminal bouton. Most distal portion of a neuron's axon and is critical for neural communication.
- 22. site of contact between nerve cells. They convert electrical signals into chemical info. which is conveyed between neurons at this site.
- 23. aka nerve fibre. Portion of nerve cell (neuron) that carries nerve impulses away from the cell body.
- 24. naked areas of the axons located between adjacent myelin internodes.
- 26. connection between the central nervous system and rest of the body. Creates the signals that control the functions of the body.
Down
- 2. receive signals that trigger an electrical signal by regulating the activity of ion channels.
- 4. cord-like structure whose primary role is to provide a pathway to conduct electrical impulses throughout the body. It relays info. from one part of the body to another.
- 7. sends and receives signals from your brain
- 8. detectable change in the internal or external environment, capable of eliciting a response in to organism.
- 9. multipolar neuron that connects afferent and efferent neurons
- 10. allows electric impulses to transmit quickly and efficiently along the nerve cells.
- 13. mass of nerve cell bodies outside the central nervous system
- 15. large granular bodies found in neurons.
- 17. main part of the cell around the nucleus excluding long processes such as axons and dendrites.
- 19. part of the peripheral nervous system that is responsible for regulating involuntary body functions, such as heartbeat, blood flow, breathing, and digestion.
- 20. membrane that receives a signal from the presynaptic cell and responds via depolarization or hyperpolarization.
- 21. consists of brain and spinal chord. Called "central" because it combines info. from the entire body and coordinates activity across whole organism.
- 25. motor neurons that carry neural impulses away from the central nervous system and towards the muscles to cause movement